Spectral synthesis of CARMENES M-type stars: stellar atmospheric parameters
Abstract
We show our very first results regarding the stellar atmospheric parameter determinations (T_{eff} , log g, [Fe/H]) of M-type stars observed with CARMENES te{Carmenes} by means of the spectral synthesis method. We have selected spectral ranges around iron and titanium lines and molecular bands in three reference M-type stars: GX And (M1.0 V), Luyten's star (M3.5 V),and Teegarden's star (M7.0 V). We employ PHOENIX stellar model atmospheres te{Phoenix}, the radiative transfer code TurboSpectrum te{TurboSpectrum} and line data from the VALD3 database te{Vald} to obtain a grid of synthetic spectra, and a Markov Chain Monte Carlo process implemented in SteParSyn code te{SteParSyn} to derive the value of the stellar atmospheric parameters.
- Publication:
-
Highlights on Spanish Astrophysics X
- Pub Date:
- March 2019
- Bibcode:
- 2019hsax.conf..416L